D0444 Identifying potential attractants of two native North American Sirex woodwasps

Wednesday, December 16, 2009
Hall D, First Floor (Convention Center)
William P. Shepherd , USDA - Forest Service, Pineville, LA
Brian T. Sullivan , USDA, Forest Service, Pineville, LA
Crawford W. Johnson , USDA, Forest Service, Forest Health Protection, Pineville, LA
James R. Meeker , Forest Health Protection, USDA Forest Service, Pineville, LA
Several potential new attractants were identified for two native North American woodwasps, Sirex edwardsii and S. nigricornis. Using coupled gas chromatography-electroantennographic detection (GC-EAD), scolytid pheromones, volatile compounds from herbicide-treated loblolly pine trees (in varying stages of decline), and commercially available steam-distilled loblolly turpentine were introduced to female woodwasp antennae, yielding numerous electrophysiological responses. Similar antennal responses were recorded from female Ibalia leucospoides, a parasitoid of Sirex larvae. Two separate trapping studies, using distillates from the herbicide-treated trees, antennally-active synthetic components of the distillates, turpentine, and the standard alpha-pinene/beta-pinene Sirex lure as bait treatments, captured few Sirex wasps. Neither the distillates nor turpentine were more attractive than the standard lure or unbaited control.

doi: 10.1603/ICE.2016.42521